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Finding the Fourth Proportional to 9,859.34, 13,605.94 and 5,383.11

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Solution

The fourth proportional to 9,859.34, 13,605.94 and 5,383.11 is: 7,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,859.34 : 13,605.94 = 5,383.11 : x
  2. Step 2: Convert to fraction form
    9,859.34/13,605.94 = 5,383.11/x
  3. Step 3: Cross multiply
    9,859.34x = 13,605.94 × 5,383.11
  4. Step 4: Simplify right side
    9,859.34x = 73,242,271.67
  5. Step 5: Solve for x
    x = 73,242,271.67/9,859.34
  6. Step 6: Final answer
    x = 7,428.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.